Burglar-alarm for automobiles



W. S. WILLS AND A. ROGERS.

BURGLAR ALARM FOR AUTOMOBILES.

APPLICATION FILED MAY 7. 1920.

1,366,855. Patented Jan. 25, 1921.

3 SHEETS-SHEET I.

INVENTORS V 37M I ATTORNEY W. S. WILLS AND R. A. ROGERS.

BURGLAR ALARM FOR AUTOMOBILES APPLICATION FILED MAY 7. I920.

Patented Jan. 25, 1921.

3 SHEETS-SHEET 2.

INVENTORS BY W l min A TTORNE I W. S. WILLS AND R. A. ROGERS.

BURGLAR ALARM FOR AUTOMOBILES.

, AFPLICATION FILED MAYI. I920. 1,366,855.

Patented Jan. 25,1921.

3 SHEETS-SHEET 3.

INVENTORS. BVW a? A TTORNE Y UNITED STATES PATENT OFFICE.

BUItGLAB-ALARM FOR AUTOMOBILES.

Specification of Letters Patent.

Patented Jan. 25, 1921.

Application filed May 7, 1920. Serial No. 379,664.

' To all whom it may concern:

Be it known that we, VILLIAM S.'lVILLs and ROBERT A. Rooms, citizens ofthe United States, and residents of Oklahoma city, in

the county of Oklahoma and State of Oklahoma, have invented certainImprovements in Burglar-Alarms for Automobiles of which the following isa specification, reference being bad to the accompanying drawings.

The object of the invention is to provide means for giving an alarm whenan unauthorized person attempts to start an automobile.

Figure 1 of the drawings is a plan view showing one of thepracticalforms in which the invention may be embodied.

Fig. 2 is a sectional view taken on the line 2-2 of Fig. 1, but showingnothing but an inclosing casing and the contained parts of a combinationlock mechanism.

Fig. 3 is a plan View of the bottom of the incl osing casing,

Fig. 4 is an inverted plan view of the upper or cover p'ortionof thecasing and the parts contained therein.

Fig. 5 is a fragmental reproduction of Fig. 4, but shows a difierentposition of cer' tain parts.

Fig. 6 is a similar view, but shows still another position of saidparts. I

Fig.7 is a sectional view taken on the line 7--7 of Fig. 6.

Like characters of reference designate like parts in all the figures.

For convenience of this description. certain electric switches and anelectric bell are represented by the usual electric symbols and shownmounted on bases of materialwhich properly insulate them from otherparts.

Batteries and other sources of current which do not require specificdescription are omitted from the drawings.

In carrying out the object stated, there is provided a casing 10 strongenough to pr0- tect locking mechanism and electric switches, and thiscasing is adapted to be attached to some suitable part of the automobilein such manner that it cannot be readily removed.

The casing 10 includes a bottom 11 and top 12, the latter havingintegral side walls 13 and end walls 14 and 15 which. fit the rabbetededges 16 of the bottom.

The bottom 11 and top 12 are secured together by screws 17, and anysuitable means may be provided for rendering the heads 18 of thesescrews inaccessible to unauthorized persons.

At one corner of the interior of the easing 10 the tumbler mechanism ofa combination lock is arranged.

' In arranging this tumbler mechanism, a depending annular seat 19 iscast integrally with the cover 12, and a supporting base 20 is securedto the lower face of said seat by screws 21.

This base 20 is provided centrally with the usual pivotal stud 22, onwhich disks or tumblers 23 are mounted to revolve, each tumbler beingprovided at its edge with the usual notch 24.

A knob 25 is mounted on the outer surface of the top 12 with its spindle26 journaled through said top and concentric with the stud 22, the innerend of the knob spindle 26 being provided with a disk 27 which is itselfprovided with an edge notch 24 and serves as a tumbler.

The disk 27 and the tumblers 23 are provided with the usual face studs28, so that by revolving the knob 25 the notches 24 of the tumblers maybe alined.

In further arrangement, a switch-operating bar 29 is mounted slidably inthe casing 10 on a line preferably intersecting the pivotal axis of thetumblers 23, the end of this bar adjacent said tumblers being guided bya bearing 30 on the cover 12 and the outer end being guided by passingthrough the wall 15.

lVith the bottom 11 and top 12 of the easing 10 assembled, a stud 31 onthe bottom forms a separable portion of the bearing 30 in guiding thebar 29; and in order to allow the end of the bar to enter the notches 24of the tumblers 23 and disk 27 an opening 32 is provided in the seat 19.

The electric switch 33 of the ignition circuit. or one or more of theother switches used, may be contained in the casing 10 and secured to ablock 34 mounted on the cover 12, this switch being operated by the bar29 through a suitable connecting-rod 35.

The wiring 36 from this switch 33 may lead out of the casing 10 througha suitable protecting conduit 37.

T 0 close the switch 33, the combination of the tumblers 23 is firstworked to aline the notches 24 in position to receive and clear the end38 of the bar 29; then the may be thrust inward by pressing against itsouter or knob end 39, and will close the switch 33.

In arranging for the operation of mechanism for giving an alarm when atrial move ment of the bar 29 is attempted, the end of said bar, in itslocked or initial position shown in Fig. 4, is space far enough from thetumblers 23 to allow a limited portion of its full switch-throwingstroke be fore being positively stopped by said tumblers.

The alarming mechanism includes a spider 40, which is pivoted on a stud41 supported by the top 12.

This spider 40 is HOVldGCl with an arm 42 in the outer end or which asmall roller 43 is pivoted.

- The V-shaped end 44 01"- a leaf spring 45, which is secured torthewall 15, rests yieldably against the periphery of the roller 4, and whena dead center line BB through the pivot of said spider and the pivot ofthe roller V-sha 38d end 44 in either direction the spider flips to thelimit of its throw in said direction.

A second 46 of the spider 40 projects along the bar 29 and, with the barat the outer extreme of its throw as in 4, rests slidably against a stop4-? on said under the influence of the spring hen the bar 29 pressed inagainst the tumblers 23, in an attempt to feel for the alinement 01"-said tumblers, the stop 47 on the bar is carried to where the arm 46 ofthe spider 40 drops in behind it into the position shownin Fig. 5 underinfluence of the spring 45.

A switch 48, supported on a block 49 se cured to the cover 12, isoperatively connected to the arm 46 through a connecting rod 50, so thatthe droppingin movement of said arm 46 closes said switch and completescircult through a bell 51.

The wiring 52' for the'hell 51 may lead from the switch 48 out of thecasing 10 and through the conduit to a proper source of current.

The face 53 of the stop 47, on the line of length of the arm 46 that nowithdrawing force exerted on the bar 29 can swing said arm out in adirection to open the To swing the arm 46 outward and open the switch48, the tumblers 23 and disk 27 may be alined by the person knowing thecombination, and the full switch-throwing stroke of the bar 29'may becompleted; and in completing said stroke a second stop 54 on said barengages a short arm 55 on tire spider 40 and swings saidspider to whereit will flip to the extreme position shown passes the contact point ofsaid in Fig. 6, this movement 01" the spider opening the switch 48 andstopping the action o1 the bell 51.

li ith the ignition switch 33 thus closed, the automobile say be drivenaway; or if it is not desired to so use the vehicle the bar :29 may bedrawn outward. its full throw to open said switch; and during thisoutward movement of the bar a third stop 56 thereon engages the arm 55of the spider 40- and swings said spider to where it will flip its arm46 into contact with the stop in the initial position shown in Fig. 4and thus open the switch 48 of the bell 51.

After the bar 29 has been withdrawn to this position, the tumblers 23and disk 27 may be thrown out of alinement by use of the knob 25 as inother combination locks.

In order that the three stops 47, 54, and may be adjusted in position onthe bar they may be in the form of tight-fitting nuts which arescrewthreaded and engage screw threads on said bar.

The following is claimed 1. In a device of the class described, anint-losing casing, a member manually movable in the casing and adaptedto control a, switch, releasably locking means in the casing adapted topositively stop switch-controlling movement of said member at a pointintermediate its "full stroke, a stop on the movable member, a springactuated detent pivoted in the casing and lying in slidable contact withsaid stop, said detent being adapted to drop, behind said stop upon aninitial movement or" said member, and means whereby oropping movement ofthe detent sounds an alarm.

2. In a device of the class described, an inclesing casing, a membermanually movable in the casing and adapted to control a. switch,releasable locking means in the cusing adapted to positively stopswitch-controlling movement of'the member at partial completion of its"full stroke, a stop on the movable member, a spring-actuated detentpivoted in the casing and lying in slidnble contact with said stop, saiddetent being adapted to drop behind said stop upon an initial movementotthe switch-controlling member. means whereby dropping movement of thedetent sounds an alarm, and means whereby completion of the full strokeof the switch-controlling member swings the detent from behind saidstop.

3. In a device of the class described, an inclosin casing, a membermanually movable in the casing and adapted to control a switch,releasable locking means in the easing adapted to positively limitswitch-controlling movement of said member to a partial stroke, a detentpivoted in the casing and adapted to lie in sliding contact with saidstop, means acting yield-ably to hold said detent away from anintermediate point in its full throw, said detent being adapted swingssaid detent to and past the aforesaid to drop behind said stop upon .aninitial intermediate point in its full throw. movement of theswitch-controlilng mem- WVitness our hands this 19th day of April, 10her, means whereby dropping movement of 1920.

the detent behind said stop sounds an alarm,

and means whereby completion of the full WILLIAM S. WVILLS. stroke ofthe switch-controlling member ROBERT A. ROGERS.

